Home / 39,291.48-54,223.02-30,803.76

Finding the Fourth Proportional to 39,291.48, 54,223.02 and 30,803.76

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Solution

The fourth proportional to 39,291.48, 54,223.02 and 30,803.76 is: 42,509.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,291.48 : 54,223.02 = 30,803.76 : x
  2. Step 2: Convert to fraction form
    39,291.48/54,223.02 = 30,803.76/x
  3. Step 3: Cross multiply
    39,291.48x = 54,223.02 × 30,803.76
  4. Step 4: Simplify right side
    39,291.48x = 1,670,272,894.56
  5. Step 5: Solve for x
    x = 1,670,272,894.56/39,291.48
  6. Step 6: Final answer
    x = 42,509.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.